Question

what are energy considerations ?

Answer 1

energy plays a key role in chemical processes. the more general terms exoergic (energy evolved)and endoergic(energy required)are used when forms of energy other than heat are involved. a great many common reactions are exothermic.

Answer 2

Answer:

Energy plays a key role in chemical processes. In some reactions the energy required to break bonds is larger than the energy evolved on making new bonds, and the net result is the absorption of energy. ... Such a reaction is said to be endothermic if the energy is in the form of heat.

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Explanation:

This subsection presents the results of a life-cycle analysis of energy inputs and outputs over the 20-year time frame used in this study. The basis is 1 ton of MSW at the curb.

Determining how much energy is used, saved, or avoided through recycling requires a complex analysis. Energy requirements for the entire recycling process include not only those for operations associated with the MSW management strategy, but also those for industries that remanufacture the products based on recycled materials.

Energy is required for:

1) Curbside pickup of separated reusable materials (in addition to that required for the standard MSW collection program).

2) Processing the collected materials or separating and processing materials from mixed MSW.

3) Transporting the products of the MRF to the point of remanufacture.

4) Remanufacturing a new product.